21148981

素因数分解:

$7^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:588

約数の個数: 16

約数和(自身を含む): 24796800

約数和(自身を除く): 3647819

約数列:

[1, 7, 83, 89, 409, 581, 623, 2863, 7387, 33947, 36401, 51709, 237629, 254807, 3021283, 21148981]

約数ペア:

[(1, 21148981), (7, 3021283), (83, 254807), (89, 237629), (409, 51709), (581, 36401), (623, 33947), (2863, 7387)]